Tuck creasing or marking attachment for sewing-machines



(No Model.) I

- J. M. GRIEST.

TUOK GRBASING AND MARKING ATTACHMENT FOR SEWING MACHINES. No. 394,971. Patented Dec. 25, 1888.

j g/wa e LII TINTTED STATES PATENT EErcE.

JOHN M. GRIEST, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY OF NETV JERSEY.

TUCK CREASING OR MARKING ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 394,971, dated December25, 1888.

Application filed December 2'7, 1887. Serial No. 269,096. (No model.)

To all whom it may concern.-

Be it known that I, JOHN M. GRIEST, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tuck Creasers or Markers for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates more particularly to that class of tuck creasing or marking devices in which the creasing is effected by a small grooved roller having an intermittent yielding contact with an upturned lip on the baseplate or lower arm of the attachment and operated from the needle-bar of the machine, so as to be moved back and forth over the said lip, between which and the said roller the work to be creased is fed.

The object of my invention is to provide a simple, compact, and strong creasing or marking device of the class referred to, which will operate in a silent and positive manner; which may be thrown out of operation, when desired, without removing it from the machine, and which is adapted to crease the goods nearer to the line of stitches than the devices now generally in use.

In the drawings, Figure l is a partial front view of a sewing-machine with my marker in operative position relative to the presser and needle bars thereof. Fig. 2 is a front view of the marker. Fig. 3 is a cross-section of the same on line 3 3, Fig. 2; and Figs. at and 5 are vertical and horizontal sections through the supportingbraoket. Fig. 6 is a detail front end view of the marker. Fig. 7 is an enlarged detail view of the retaining bar or block.

A denotes a portion of the depending head at the forward end of the bracketarm of a sewing-machine, B the needle-bar, and O the presser-bar. Surrounding the presserbar, which is, as usual, arranged rearward of the needle-bar, is a tubular attachment'holding bar, D, such as is fully described in my application Serial N 0. 259,089, filed simultaneously herewith, the attachment-bar being provided with a clamping-lever, d, operating as set forth in my said application.

E denotes the frame or body bar of the attachment, said bar being bent downward to form a lower flattened portion, 6, provided at its forward end with a knife-edge or upturned creasing-lip, e, which is preferably directly below the forward end of the bar E.

F is a bracket having baclnvardly-turned perforated ears f, through which the rod E passes, the said bracket serving to secure the creaser to the attachment-bar I).

G is a rocking marker-carrying bar or shaft extending lengthwise of the marker and j ournaled on the bar E, and retained thereon by the screw 6 the said bar G having depending arms g and g. The creasing-wheel g is arranged in a recess in the lower end of the arm g, and is journaled 011 the spring-rod h, attached at its rear end to the arm g of the rocking-bar G. The arm through which the forward or free end of the spring-rod it passes, is provided with a slot, 9 to permit of a limited vertical movement of the said end of the said rod, so that the creasingwheel, which is normally pressed down against the lip e by the springrod h, will have a yielding pressure against said lip, as is desirable in this class of devices.

The rocking bar G is operated positively in both directions by a forked lever, which engages a screw or projection 011 the machine needle-bar, and which is preferably made in two separable portions, 1' and i, the part 2' having a notched portion, to embrace the said rocking bar. One or both parts of this operating-lever are of spring metal and are held together by a pin, i 011 the part 2', said pin entering a hole or slot in the part i, which springs over the said pin. By a slight lateral pressure the operator can disengage the part 1" from the pin 2' and the two arms or parts of the said lever will then be free to be separated, as indicated by dotted lines, Fig. 3, and the creaser can thus be thrown out of operation without removing it from the machine, the needle-bar screw or projection moving freely up and down without engagement with the operating-lever when the two partsof the latter are thus separated.

J is a gage or edge-guide carrried by a bent rod or wire, 9', which passes through the ears f of the bracket F and is adjustable through the said bracket. The supporting-bar E is also adjustable through the bracket F, so as to vary the position of the creasing-wheel and lip 6 relative to the needle in forming marks or creases for tucks of widths, the said bar E and. the guide-carryin rod j being both secured in place by a retaining-loop, l\,l1aving a threaded stem to receive a setrnut, L. The loop K eml'n-aces the bar E and rod j, as shown in Fig. 4, and also a retainingblock, m, interposed between the said bar and rod. To prevent turning or lateral displacement of the said loop,it-s forward end is entered into a slot or recess, 1*, in the bracket F, and to form a neat finish for this part of the device the said loop and the block in are incased by a cap or housing plate, 71. The bar E and the rod j are both provided with flattened faces, which are in c n1tact with the block HI, (see Fig. -;L,) and which prevent these parts from rocking and thus getting out of place.

\Vhen the set-nut L is loosened, the bar E and rod will be free to be adjusted laterally through the ears of the bracket F; but when the said nut is tightened against the housingplate n the loop K will draw the rod against the block 111, forcing the latter against the bar E and causing said bar to impinge against the ears fof the bracket F, and thereby sccuring or holding all of these parts in place. The block in is provided at both ends with small shoulders m, (see Fig. 7,) which abut against the ears f of the bracket F to prevent displacement of the said block, the latter having also a notch, in", to receive the parts [and i of the forked )peratingleX er, said notch thus serving to hold the two parts of the said lever in. contact with each other, and also to retain the said lever in proper position contiguous to the bracket F, so that it will not be accidentally displaced when the bar E or rod j are adjusted through said bracket or at other times. The block m also serves to separate the bar E and rod j, so that either of these parts maybe adjusted without accidental (llSIlltlCQlllQlli' of the other, such as might occur it these two parts were in Erietional contact. The operatinglever also provided with a curved slot, 1?, which receives the rod j, and also the thin portion of the block m, opposite the notch m the said rod or block serving astop against which the upper end wall of the said slot may abut to prevent the part 11 of the operating-lever from falling down onto the work when the two arms or parts of the said lever are separated to throw the creaser out of operation without removing it from the machine.

From the foregoing it will be apparent that when the creaser or marker is secured in operative position on a sewing-machine and the machine set in motion the rocking bar or shaft G will be vibrated from the operatinglever, which receives its movements from the needle-bar of the machine to cause the creasing-roller carried by the said rocking bar to come in contact with and. to move back and forth over the fabric resting on the knife edge orlip c, the creasing-roller moving from the position shown in full lines to that shown by dotted lines, l ig. l3, and back again at each stroke of the n(.\cdlc-bar, the said roller being lifted. from the fabric when the needle is out of the work and the latterismoved 'lorward by the feed, thus leaving the work unimpeded by the pressure of the creaser d uring the times of the feeding movements.

It will be observed that the creasing-roller is moved positively back and forth in the arc of a circle by the arm of the rocking bar or shaft by which it is carried, and isyicldingly presscal against the fabric by the spring-rod on which it is journalm'l, so that it creases the cloth with a yielding rolling pressure, which preclinles the possibility of cult ing or abrading the thinnest ialn'i cs.

The bracket F, by which the creascr is connected. to the attachment-bar, is on the front side of the crcaser, and the creasing lip is be low the center of movement of the rocking bar, so that the creasing devices are not only rearward of the needlc, but are rearward. ol the prcsser-foot of the machine, as clearly shown in Fig. 1. From this colistri'iction and arrangement of parts I am enabled to form well-defined creases nearer to the line of stitches than can be made by the creasers heretofore in use, for the reason that it a crease be made in front of the pii'esser-foot and near enough to the needle to come in the line of the presser-ioot it will. be partly obliterated when passed under the said foot in. the operation of sewing, and where the cre: ing devices are opposite to the presser-ioot the latter will prevent them from being adjusted as closely to the line oi? stitches as is necessary in making very narrow tucks.

As I believe that lam the first to construct a tuck crcaser or marker in such a lilllll'lfll' that the creasing devices are rearward of the presser-ioot of the machine, and also the first to provide a tuck. creaser or marker with a rockin bar or shal't havinan arm which car rics a cr(; asiiig-rollcrback and forth positively in the arc of a circle while it is held in yielding contact with a knife-edge or caieasing-lip beneath the center of motion of the said bar or shaft, I do not wish. to be understood as limitii'lg my invention to the details of con strnction herein shown, as varicms modifications of my invention may be made without departin from the spirit thereof.

The attachment and presser-t'oot holding devices incidentally shown in Fig. 1 are not herein claimed, as they are embraced by my application hereinbelforc referrml to.

I claim- 1. The combi nati on,wi th the operative parts of a sewing-niachine, ot a tuck creascr or marker the creasing or ma'rkiiig devices of which are rearward ot' the presser-loot of the machine.

2. In a tuck creaser or marker for sewing machines, the combinatiomwith a rocking bar or shaft having a rigid arm carrying a springpressed creasing-roller which is oscillated in the arc of a circle directly by the said arm, of a creasing-lip to co-operate with the said roller, and against which lip the said roller is yieldingly pressed as it is moved back and forth oxer the same, said creasing-lip being below the center of movement of the said bar or shaft, so that the said roller is caused to travel positively back and forth over the said lip in the direction of movement of the said bar or shaft as the latter is oscillated.

3. In a tuck creaser or marker for sewingmachines, the combination of a rocking bar or shaft extending lengthwise of the marker, and provided with a rigid depending arm having a slot near its lower end, a spring-rod passing through said slot, a creasing-roller journaled on said rod within a recess at the lower end of said arm, and a creasing-lip to co-operate with said roller.

l. The combination, with the bar E, having the flattened lower portion, 6, provided with the creasing-lip e, of the rocking bar or shaft G,journa1ed on the said bar E, and having two depending arms, 9 and g, a spring-rod attached to the said arm g and extending through a slot in the arm g, a creasing-roller journaled on the said spring-rod, and an operating-lever for the bar G.

5. The combination, with the bar E, having the flattened lower portion, e, provided with the creasing-lip e, of the rocking bar or shaft G, journaled on the said bar E, and having a depending arm carryin g a creasing-roller, and an operating-lever pivoted on the said bar E, and having a portion notched to embrace and thus operate the said bar G.

6. The combinatiomwith the bar E and the creasing devices supported thereby, of the bracket F, having ears f, through which the said bar extends, a guide-carrying rod also extending through the ears of the said bracket, a block interposed between said rod and bar, a clamping-loop surrounding said rod, bar, and block and provided with a threaded stem, and a set-nut on the said stem.

7. The combination, with the bar E and the creasing devices supported thereby, of the bracket F, having the perforated ears f, the rod j, the block in, interposed between said bar and rod, the loop having a threaded stem, a set-nut on said stem, and the cap or housing plate a.

In testimony whereof I affix m y signature in presence of two witnesses.

JOHN M. GRIEST.

Witnesses:

HENRY CALV R, EWELL A. DICK. 

